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String to Float not work

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donja
Smarty n00b

Joined: 31 Jul 2020
Posts: 1

Posted: Fri Jul 31, 2020 10:01 am Post subject: String to Float not work

Hallo,

ich versuche folgende Rechnung:

Quote:

{math assign="test1" equation="x - y" x=$value1 y=$value2 format="%.2f"}
Ergebnis: {$test1}

Anbei mein Rangehen:

Quote:

{assign var="myArray" value="€"|explode:$cart_total}
{assign var=warenkorbpreis value=$myArray[0]|replace:",":"."}

Ergibt (zum Beispiel): 49.86

Quote:

{assign var=versandfreikosten value=TXT_BEISPIEL}

Ergibt (zum Beispiel): 89

Beide Werte werden ausgegeben aber nicht berechnet.
Nun teste ich den Variablentyp um evtl. zu konvertieren.

Quote:

{if $versandfreikosten|is_string}
{$value1 = $versandfreikosten|floatval}
{if $value1|is_float} float
{$value1}
{/if}
{/if}

Es wird mir 89 ausgegeben.

Quote:

{if $warenkorbpreis|is_string}
{$value2 = $warenkorbpreis|floatval}
{if $value2|is_float} float
{$value2}
{/if}
{/if}

Hier wird mir 0 ausgegeben.

Könnt Ihr mir helfen woran es liegt?

Viele Grüße

Donja

----------------------------------------
Try in Englisch:

helllo,

ich try to calc:

Quote:

{math assign="test1" equation="x - y" x=$value1 y=$value2 format="%.2f"}
result: {$test1}

this is how i will like to get my variables for the calculation:

Quote:

{assign var="myArray" value="€"|explode:$cart_total}
{assign var=warenkorbpreis value=$myArray[0]|replace:",":"."}

Result (for example): 49.86

Quote:

{assign var=versandfreikosten value=TXT_BEISPIEL}

Result (for example): 89

both variables will be show but not calculate. so i check wicht type of variable it is and convert to float for the calculation.

Quote:

{if $versandfreikosten|is_string}
{$value1 = $versandfreikosten|floatval}
{if $value1|is_float} float
{$value1}
{/if}
{/if}

result is 89

Quote:

{if $warenkorbpreis|is_string}
{$value2 = $warenkorbpreis|floatval}
{if $value2|is_float} float
{$value2}
{/if}
{/if}

result is 0

can you help, why the result is 0 and not 49.86?

yours

Donja

AnrDaemon
Administrator

Joined: 03 Dec 2012
Posts: 1785

Posted: Sat Aug 01, 2020 12:09 pm Post subject:

Try this code:

Code:

{$test1=($value1 - $value2)}
{$test1|number_format:",":" "}

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